Dispensing gun for fluid containers



April 3, 1956 R. J. BOULAY DISPENSING GUN FOR FLUID CONTAINERS 2Sheets-Sheet 1 Filed June 12, 1953 INVENTOR. fiaem 1f Boalgy BY MawApril 3, 1956 R. J. BOULAY nxspsusmc GUN FOR FLUID CONTAINERS 2Sheets-Sheet 2 Filed June 12, 1953 JNVENTOR. Bobs/ 2f TI Boulez UnitedStates Patent DISPENSING GUN FOR FLUID CONTAINERS Robert J. Boulay, LaMoille, Ill.

Application June 12, 1953, Serial No. 361,253

Claims. (Cl. 299-97) This invention relates to a fluid dispensing gunfor fluid containers.

More specifically, the present invention relates to an apparatuscomprising a pumping structure that can be used in connection with acommercial can of fluid material and which will serve the purpose ofdrawing the fluid out of such can and discharging the same externallythereof as directed by the user.

It is one of the objects of the present invention to provide a simpleoperative mechanism which includes a can piercing element that isconstructed and arranged for entering one wall of a can carrying a fluidand which mechanism includes simple detaching means for securing thisstructure to a can and wherein the piercing unit contains operativepumping mechanism for drawing the liquid from within the can, togetherwith a nozzle discharge element for directing the fluid to a givenlocation externally of the can.

It is a further object of the present invention to provide a lightweightstructure of this character which is attachable to a conventionalcommercial fluid containing can and which, when associated with suchconventional can, provides a complete fluid dispensing unit that isreadily portable and usable for discharging the fluid from within thecan as needed by the user or operator thereof.

It is a further object of the present invention to provide a dispensingunit of this type wherein the piercing element comprises the pumpconstruction and wherein the entire pump structure is confined within asmooth wall element that can be driven into the can to its finaloperative position with respect thereto with a minimum amount of efforton the part of the operator.

As another object the present invention includes a piercing structurewherein the can forming and rupturing tip thereof is so designed andpositioned so as to provide an opening of predetermined outline in thetop of the can to provide a suitable vent or vent areas adjacent thepiercing element whereby air can enter the can as the fluid from the canis drawn therefrom.

Another object is to provide a suitable gasket or washer arrangementwhich preferably comprises a neoprene sponge unit that encircles atleast a greater portion of the piercing structure and which is capableof being pressed against the can top, particularly in a positionadjacent the vent openings of the ruptured hole in the can. With thisparticular neoprene sponge unit or washer, it is possible for the can tobreathe and with the necessary amount of compression, such washer alsoprevents the fluid from leaking or passing out of the vent openingsadjacent the piercing unit of the fluid dispensing mechanism.

Other objects of the present invention include the design of anapparatus having a generally flat basic structure for positioningadjacent the can top and including a depending handle to provide abalancing arrangement wherein the handle is placed adjacent one side ofthe can, the same construction including a slightly elevated and anglednozzle mechanism to provide better sighting for directing a stream ofthe dispensing fluid toward a certain 2,740,666 Patented Apr. 3, 1956location, together with other constructional details such as theconvenient fastening means employed and the efficient piercing unit,together with other details which shall hereinafter be described.

Other objects and advantages relating to the present invention shallhereinafter appear in the following detailed description havingreference to the accompanying drawings forming a part of thisspecification.

In the drawings:

Figure 1 is a plan view of the dispensing gun of the present inventionillustrating this apparatus as attached and in operative position upon aconventional fluid carrying can;

Figure 2 is an underneath view of the same apparatus showing theattached means released and illustrating the general position of a canin dot and dash lines in relation to this apparatus;

Figure 3 is a side elevational view of the can arrangement shown inFigure 1 with a greater portion thereof broken away and in sectionsubstantially as seen along the line 3-3 in Figure 1;

Figure 4 is a fragmentary detail plan view of a part of the apparatusshown in Figure 3 and as viewed along the line 4-4 therein; and

Figure 5 is a detail transverse sectional view taken substantially alongthe line 5-5 in Figure 3.

The dispensing gun of the present invention constitutes as its chiefelement of construction a pump 1 supported and carried upon apositioning and orientation plate 2 which overlies a conventional fluidcarrying can 3 and a suitable handle 4 is connected by means of a strapiron 5 with the supporting plate 2, the pump mechanism 1 comprising thepiercing element of the can 3. Referring more specifically to Figure 3,the pump mechanism 1 comprises a tubular barriel 6 secured at its upperend to a head 7 surrounding a depending boss 8 of said head and abuttinga shoulder portion 9, while the opposite end of the barrel is plugged bymeans of the valve sleeve 10 which carries a loose check ball 11. Theentire barrel 6 is preferably externally smooth and free from anyobstructions between its head and the terminal end thereof, and suchterminal end comprising the valve sleeve 10 and the adjacent portions ofthe barrel are cut oh and angled as at 12 to provided a can piercingpoint 13 at one side of the barrel. Preferably, the point 13 islaterally disposed as shown in Figure 3 so as to properly pierce the cantop 14 in a position adjacent either one of the beads 15 and 16 providedat the ends of the can, and which beads comprise the sealed structurebetween the top and bottom and the side walls of the can 3.

By so locating the point 13, the entire structure is prepositioned in agiven relation with respect to the can whereby this apparatus can thenbe easily secured to the can top as will hereinafter by explained.

Referring back to Figure 3 and to the pump 1, this construction includesa reciprocable rod 17 which carries a piston 18 including a plurality ofbores such as 19 and a flap valve 20 is carried upon the stem orreciprocable rod 17 to alternately open and close the bores 19 inaccordance with the direction of operation of the rod or stem 17. Ashoulder abutment 21 is supplied upon the rod 17 to limit the upwardmovement of the flap valve 20. A spring 22 encircles the rod 17 and isconfined between an annular shoulder unit 23 connected with or formedupon the rod 17 and the bottom surface 24 of the sleeve 8 of head 7.Downward movement of the rod 17 is limited by means of the annularwasher or annular integral portion 25 formed at the upper and head endof the stem or rod 17.

As best shown in Figures 3 and 4, the head 7 is provided with severalvertical bore 26-26 which communicate from within the chamber 28 of thebarrel 6 with a bored and threaded cavity 29 which receives the threadedend 3% of a spout or tube 31. This spout or tube 31 is preferablyprovided at its outer end with a nozzle 32 that will thread or connectwith the spout or tube 31 substantially as shown at 33.

Thus the entire pump unit or structure per se comprises a complete pumpin the form of a piercing element as described which is capable ofpositioning within a can by piercing one end thereof so that the fluidfrom within the can is adapted to be drawn off through the bore 27 ofsleeve past the check ball 11 by means of the piston and operatingstructure connected therewith when reciprocated so as to force theliquid into the barrel 28 through the apertures or bores 26 and intochamber 29 for dispensing through the tube 31 and nozzle 32.

The foregoing described pump and piercing element 1 is connected bymeans of the head 7 to the supporting plate 2 through an opening 34 insaid plate with portions such as 35 of the head wedged or secured overagainst the underside of the plate and positioning member 2. The pumpoperating mechanism comprises a rockable strap or trigger 36 whichincludes the lever or trigger 37 for thumb operation at one end thereofand an offset lever 38 which extends upwardly and over the head 7 fromthe plate 2 terminating in a bifurcated or slotted end 39 straddling thestem or rod 17 of the pump operating mechanism. This trigger or rockablestrap 36 is provided intermediate its length with an opening 40 whichrides upon a pin 41 that is connected with the triangular support orbase member 2 of the dispensing apparatus.

The handle 4 which is suitably secured by means of fastening units suchas the screws 42 and 43 to the strap iron bar 5 is connected with themain supporting plate or support 2 by means of a rivet 44 and also bymeans of the rivet 41 previously described. This provides a rigidcontinuous structure comprising the handle and the supporting unit whichtogether are securely fastened to or support the entire pump structurewhich has also been previously described.

In addition, the strap iron 5 of the handle structure is provided withan opening or bore 45 which carries pin 46 that is connected with thecam 47 and which comprises part of the securing mechanism which connectsthe dispensing unit and apparatus with the can associated therewith. Pin46 and cam 47 are also secured or fastened by any suitable means to therelease lever 48 which can turn about the axis of the stem 46 toobviously rotate the cam 47 into and out of engagement with the side ofthe can and particularly from under the bead thereof. In this respect,the cam 47 is vertically ofiset as best shown in Figure 3 to therebyprovide the means for engaging beneath the head 15 of such can 3.

Referring now to Figures 1 and 2, it is to be noted that the plate orsupport 2 is provided with depending ears 49 and St) in spaced relationalong the forward or pump end edge thereof. These ears depend downwardlyand are provided for engaging over the bead 15 at the adjacent portionof the can. Furthermore, the forward edge 51 of the support or plate 2also overlies the adjacent can portion as best illustrated in Figure 1.

During the piercing operation as previously referred to, the point 13 isplaced inside of either one of the beads 15 and 16 and the operator canpush down upon the head structure to cause the pump barrel to pierce thecan which is a relatively easy operation. As the pump is pushed into theopening caused by the piercing point 13 and the bevelled edge 12, thetwo depending lips or ears 49 and 50 merely engage over the outerperipheral edge of the particular bead that lies adjacent the head andwhich is head 15 in the particular illustration shown in Figure 3. Whenthis apparatus is brought into this position, the cam 47 is normallypositioned as shown in Figure 2 with the handle 48 extending at rightangles to the lengthwise dimension of the apparatus. If the supportingunit or plate 2 and the pump head 7 are all seated against the upperportion of the can, this will bring the cars 49 and 50 over the beadededge of the can as described and simultaneously this will bring the cam47 into a position whereupon a rotation of the arm or lever 48 into theposition shown will bring the cam 47 into tight locking engagementbeneath the bead 15 with the opposite edge of the can with respect tothe cars 49 and 50, thus firmly securing the entire apparatus in apredetermined dispensing relation with respect to the can. This entireoperation also places all of the working parts into convenient use forthe operator with the nozzle pointing radially outwardly from theforward edge of the can as shown in Figure 3 and with the handle 4depending below the upper portion of the can and with respect to theoverlying apparatus of the dispensing device so as to provide a feasiblebalanced unit for use in dispensing fluid from within the can throughthe nozzle 32. It should also be noted that the trigger or thumboperating member 37 is conveniently brought into a position adjacent andabove the handle 4, which places this lever in the very useful andconvenient position for engagement by the operators thumb from the samehand that is gripping the handle 4. Then by operating the trigger orlever 37 downwardly, the pump mechanism is actuated as desired with thespring 22 returning the lever 37 to its normal seated position as shownin Figure 3 after each depression of the end 37 thereof.

In order to provide a vent to permit the can to breathe during thedispensing of the fluid, attention is directed to the opening 52 whichis formed through the can top as shown in Figure 4. With the circularbarrel design and with the diagonal edge 12, the piercing barrel cuts agenerally smooth circular opening such as 52 and turns the metaldownwardly and inwardly into a loose flap such as shown at 53 in Figures3 and 4. This flap automatically turns back inwardly about the connectedend and hinged portion so to speak 54, and with this particularconfiguration formed during the piercing action, a pair of vents such as55 and 56 are formed as a part of the hole 52 as shown in Figure 4.These vents such as 55 and 56. therefore, provide the venting orbreathing apertures for the can so that no air lock is possible and thedispensing of the fluid is conveniently and efficiently brought about bythe pump structure 1.

However, it is also desirable to prevent any fluid from leaking out ofthe vents such as 55 and 56. To prevent such fiuid leak, a suitableneoprene sponge washer such as 57, as best shown in Figures 2 and 3, isemployed which washer at least partially encircles the barrel 6 of thepump and also is seated adjacent the head portion 7 of the pumpstructure.

It has been found that the use of. a neoprene sponge gasket or washersuch as 57 provides an automatic air venting seal which will prevent thefluid from leaking out of the can through the openings or vents 5S and56. which will also permit air to flow into the can as required by thelowering of the fluid level. i t has also been found that with thespongy structure of such a gasket or washer 57 that if the same is notcompressed over fifty per cent of its height, this gives adequate fluidseal capacity without blocking off the air breathing attributes of sucha washer or sealing member. Thus, with the particular pump structureforming the piercing element and having an end as described which iscapable of forming the opening 52 in a can with the adjacent vents 55and 56, the entire arrangement forms a self breathing unit facilitatedby the washer 57 constructed and arranged as used and .as illustrated inFigures 3 and 4.

With the dispensing gun comprising the apparatus described, it ispossible to use, as an example, a commercial one quart oil can as areservoir unit, and the particular dispensing apparatus can then beforced into the can top metal by means of the piercing barrel of thepump until the entire flat bracket arrangement overlies the beaded edgesof the can, which downward depression of the entire unit causes the ears49 and 50 to engage one edge of the can whereby the entire unit isprepositioned to permit an operator to swing the cam 47 by means oflever 48 into tight locking engagement with this reservoir or can todispense the fluid from therein through the pumping arrangement and outof the nozzle as directed by an operator. Attention is also directed tothe fact that the supporting apparatus and bracket unit 2 is slightlyinclined downwardly from the cam end of the can toward the outer pumpend whereby the smooth surfaced barrel 6 of the pump is inclinedinwardly with respect to the adjacent can edge. During the use of thisparticular dispenser with a heavy fluid filled can, it is possible thatthe forward edge of the can might come into contact with a piece ofapparatus or other unit that is being oiled. Should this unit strike thelower portion of the can which is most susceptible to possible damage,this portion of the can being spaced from the bottom end of the pumpwill protect such pump barrel from damage primarily due to the clearancerelationship between the adjacent can wall and the pump barrel.

it should also be understood that substantially all of the fluid can bedispensed from within the container by tipping such container slightlyso that very little liquid remains in the corner at the depending pumpend. In fact, the amount that remains in the can is substantiallynegligible and not objectionable to the use of this particular handydispensing unit hereinbefore described.

The pump apparatus of the present dispensing gun has been constructedand arranged to provide a very eflicient pumping unit maintaining suchtolerances wherein any fluid from gasoline to heavy oil may be drawnfrom a can and forced out of the nozzle tube of the dispenser. This,together with the eflicient use of this apparatus in connection with thecommercial container of a fluid such as oil, provides a means that canbe used in many situations where other less practical structures cannotbe used. in many field vehicles such as ditch diggers, caterpillar unitsand the like, there are many times when these vehicles or tractiondevices cannot be stopped but must be oiled in order to maintain thesame in proper working order. It would be impossible to use a commercialoil can for this purpose, but with the disperser of the presentinvention oil may be taken from the can and directed as a stream towardthe part requiring the oil. In this respect, the entire unit can be putto any number of uses for dispensing any number of fluids individuallyas required.

Although the foregoing description is directed to a preferred embodimentof the dispensing gun of the present invention and its use in connectionwith a commercial can or reservoir, certain changes are contemplated inthe exact construction of the individual elements or in the combinationof elements as used in this device. Any

such modifications shall, however, be governed by the breadth and scopeof the language of the appended claims directed to the dispensing gun ofthe present design.

What I claim is:

l. A dispensing gun for an end beaded can of fluid comprising a canpiercing unit, means to secure said unit in a given relation withrespect to said can comprising a support connected with said piercingunit and having enacting clamp means adapted for releasable securementsolely with the adjacent bead at the pierced end of the can and atopposite sides of said can, and operative mechan sm in said unitconstructed and arranged to draw fluid from within said can and todischarge said fluid externally of the can.

2. A dispensing gun for a sealed can of fluid comprising a can piercingunit, attaching means on said unit to secure said unit in a givenrelation with respect to said can comprising a plate to overlie one endof the can and to seat directly upon opposite edges thereof in fullystabilized relation to the can end, and coacting clamp means dependingfrom said plate and arranged for contacting engage- 6 ment with theadjacent can edge and radially inwardly thereof, and pump mechanismcarried within said piercing unit to draw fluid from within said can andincluding means to discharge the fluid externally of said can.

3. A dispensing gun for a sealed can of fluid comprising a can piercingunit, attaching means adapted for contacting engagement with one end ofsaid can only to secure said unit in a given relation with respect tosaid can comprising a plate to seat upon the can and clamp meansdepending from said plate to tightly engage said can rim radiallyinwardly, and pump mechanism housed within said piercing unit to drawfluid from within said can and including means to discharge the fluidexternally of said can, said attaching means having a handle securedthereto in spaced relation with respect to one side of said can withsaid handle being freely suspended from the atinching means, and meansoperative to actuate said pump mechanism including an operating memberpositioned adjacent said handle.

4. A dispensing gun for a sealed can of fluid comprising a can piercingunit, attaching means to secure said unit in a given relation withrespect to said can including an orientation member to completelyoverlie one end of the can and to overhang beyond the sides of said can,and pump mechanism connected with said piercing unit to draw fluid fromwithin said can and including means to discharge the fluid externally ofsaid can, said orientation member being provided with coacting elementson the overhanging portions thereof constructed and arranged formultiple point peripheral engagement with one end of said can and atopposite sides of the can with respect to the can piercing unit.

5. A dispensing gun for a sealed can of fluid comprising a can piercingunit, attaching means to secure said unit in a given relation withrespect to said can, and pump mechanism connected with said piercingunit to draw fluid from within said can and including means to dischargethe fluid externally of said can, said attaching means being providedwith coacting members all constructed and arranged for multiple pointperipheral engagement with one end of said can, at least one of saidmembers being a cam element and the other of said members providingabutment pieces.

6. A fluid dispensing device constructed and arranged for connectionwith a can of fluid to draw the fluid front within said can and todischarge the fluid externally of said can, said device comprising astructure assembly to overlie the can top, an extension on said assemblyand a handle connected with said extension, a pump unit carried by saidassembly and adapted for piercing and entering said can, a fluiddischarge nozzle connected with said pump unit, a pump unit operatingmechanism carried by said assembly and having a manual actuator arrangedfor use adjacent said handle, and releasable attachment means on saidassembly to secure the latter and its connected parts in a givenoperative relation with respect to said can comprising depending ears onsaid assembly to engage one side portion of said can, and a cam memberto tightly engage an opposite side portion of the can including anoperating lever arranged adjacent said handle for manual operation.

7. A fluid dispensing device constructed and arranged for connectionwith a can of fluid to draw the fluid from within said can and todischarge the fluid externally of said can, said device comprising astructure assembly to overlie the can top, an extension on said assemblyand a handle connected with said extension, a pump unit carried by saidassembly and adapted for piercing and entering said can, a fluiddischarge nozzle connected with said pump unit, a pump unit operatingmechanism carried by said assembly andhaving a manual actuator arrangedfor use adjacent said handle, and releasable attachment means on saidassembly to secure the latter and its connected parts in a givenoperative relation with respect to said can comprising depending ears onsaid assembly to engage one side portion of said can, and a cam memherto tightly engage an opposite side portion of the can including anoperating lever arranged adjacent said handle for manual operation. andsaid structural assembly constituting a generally flat construction tohug the can top. said handle depending from said assembly at one side ofsaid can. and said cam operating lever being carried at the top of theassembly and in a position to overlie the handle for manual operation bythe user's thumb, and said pump unit operating mechanism being supportedon top of. the assembly and over said can to also terminate in aposition adjacent and above said handle for thumb engagement.

8. In a dispensing gun for a can of liquid comprising a supporting unitto engage one surface of said can. a can piercing unit on saidsupporting unit and comprising fluid pump means to draw fluid fromwithin said can, and attaching mechanism on one of said units to secureboth of said units in a given relation upon said can comprising earmembers located to extend in the same general direction as said pumpunit, and cam means carried by one of said units constructed andarranged to laterally engage said can, said ear members and cam meansbeing oppositely positioned in radial relation with respect to said can.

9. ln a dispensing gun for a can of liquid comprising a supporting unitto engage one surface of said can, a can piercing unit on saidsupporting unit and comprising fluid pump means to draw fluid fromwithin said can, and attaching mechanism on one of said units to secureboth of said units in a given relation upon said can comprising earmembers located to extend in the same general direction as said pumpunit, and cam means carried by one of said units constructed andarranged to laterally engage said can, said ear members and cam meansbeing oppositely positioned in radial relation with respect to said can,and said ear members being at least two in number spaced to peripherallycontact the adjacent edge of the can and adjacent the overlyingsupporting unit, and said cam means being located at the opposite edgeof said can and in a radial location on a diameter passing between saidear members whereby said cam means and said ear members provide at leasta three point can gripping instrumentality to attach said units to saidcan.

10. A dispensing gun for a sealed can of fluid comprising a can piercingunit, attaching means including fixed and movable members arranged forrelative radially operative movement to engage spaced rim portions atopposite sides of the can to secure said unit in a given relation withrespect to said can,

and pump mechanism connected with said piercing unit to draw fluid fromwithin said can and including means to discharge the fluid externallyof. said can, said attaching means and said can piercing unit beingconstructed and arranged to position said piercing unit at an angle withrespect to the walls of the can when said attaching means is connectedand disposed in place against said can rim.

ll. A fluid dispensing mechanism constructed and ar ranged forconnection with a fluid can to draw said fluid from within the confinesof said can and to discharge the fluid externally of said can, saidmechanism comprising a pump having a can piercing end thereon to permitsaid pump to enter the can through the opening made by said pumppiercing end, said piercing end being constructed and arranged topreform the opening in said can to snugly fit said pump for the mostpart but to provide at least one lateral gap forming a vent at one sideof said pump opening and adjacent the pump per se, said pump includ" ingshouldered stop means to limit the insertion of said pump into said can,and gasket means associated with said shouldered stop means to engagethe can adjacent the peripheral portion of said pump and overlying saidlateral gap of the can opening to prevent fluid from leaking out of saidcan, but to permit air to filter into said can, said gasket comprising abody of predetermined thickness constructed from resilient spongy andcompressible ma" tcrial, and securing means to fasten said pump to saidcan in a position to compress said body to a given limit to therebyrender said body rigid enough to prevent fluid leakage through said canopening and its gap, but free enough to permit air infiltration intosaid can therethrough during fluid volume changes.

12. A fluid dispensing gun adapted for releasable connection with a canof fluid comprising a can piercing unit, operative mechanism for saidunit constructed and arranged to draw fluid from within said can andincluding means to discharge said fluid externally of the can, and anattachment structure connected with said unit and adapted forpositioning said unit in a predetermined relation with respect to saidcan comprising an orientation plate to (abut the edge of the can rim atspaced points upon the iery thereof, said plate having dependingportions to cncumferentially engage the same rim of the can, and amovable securing member on said plate arranged to circumterentiallyengage the rim of said can at a location peripherally spaced withrespect to said depending plate portions to mount said plate in fixedrelation with respect to said rim and can.

13. A fluid dispensing gun adapted for releasable connection with a canof fluid comprising a can piercing unit, operative mechanism for saidunit constructed and arranged to draw fluid from within said can andincluding means to discharge said fluid externally of the can, and anattachment structure connected with said unit and adapted forpositioning said unit in a predetermined relation with respect to saidcan comprising an orientation plate to abut the edge of the can rim atspaced points upon the periphery thereof, said plate having dependingportions to circumferentially engage the same rim of the can, and amovable securing member on said plate arranged to circumferentiallyengage the rim of said can at a location peripherally spaced withrespect to said depending plate portions to mount said plate in fixedrelation with respect to said rim and can, said depending plate portionsbeing arranged for said spaced point engagement of the rim at one sideof said can, and said securing member occupying a position along adiameter of the can that intersects the can rim at a locationintermediate said spaced depending portions of said plate.

14. A fluid dispensing gun adapted for releasable connection with a canof fluid comprising a can piercing unit, operative mechanism for saidunit constructed and arranged to draw fluid from within said can andincluding means to discharge said fluid externally of the can, and anattachment structure connected with said unit and adapted forpositioning said unit in a predetermined relation with respect to saidcan comprising an orientation plate to abut the edge of the can rim atspaced points upon the periphery thereof, said plate having dependingportions to circumferentially engage the same rim of the can, and amovable securing member on said plate arranged to circumferentiallyengage the rim of said can at a location peripherally spaced withrespect to said depending plate portions to mount said plate in fixedrelation with respect to said rim and can, said can piercing unit beingcarried by said plate in a predetermined spaced relation with respect tosaid depending plate portions, and piercing of said can with said unitat a position adjacent the rim of the can establishing an orientationmeans for the proper circumferential engagement of said can rim by saiddepending plate portions at one side of said can and providing locatingmeans for said securing member for proper can rim engagement at theother side of said can.

15. A fluid dispensing gun adapted for releasable connection with a canof fluid comprising a can piercing unit, operative mechanism for saidunit constructed and arranged to draw fluid from Within said can andincluding means to discharge said fluid externally of the can, and anattachment structure connected with said unit and adapted forpositioning said unit in a predetermined relation with respect to saidcan comprising an orientation plate to abut the edge of the can rim atspaced points upon the periphery thereof, said plate having dependingportions to circumferentially engage the same rim of the can, and amovable securing member on said plate arranged to circumferentiallyengage the rim of said can at a location peripherally spaced withrespect to said depending plate portions to mount said plate in fixedrelation with respect to said rim and can, said securing membercomprising a cam pivotally carried upon said plate, said cam including ashouldered portion to engage be- References Cited in the file of thispatent UNITED STATES PATENTS 2,086,467 Bryan July 6, 1937 2,140,257Butler Dec. 13, 1938 2,257,725 Davis Oct. 7, 1941 2,650,739 BoydstonSept. 1, 1953 2,660,338 Dunn Nov. 24, 1953

